(19)

(11)

EP 3 941 917 A1

(12)

(43) Date of publication: 26.01.2022 Bulletin 2022/04 (21) Application number: 20778480.2 (22) Date of filing: 19.03.2020

(51) International Patent Classification (IPC):  C07D 405/10(2006.01) (52) Cooperative Patent Classification (CPC): C07D 319/18 (86) International application number: PCT/IB2020/052492 (87) International publication number: WO 2020/194138 (01.10.2020 Gazette 2020/40)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 22.03.2019 IN 201921011181 (71) Applicant: Piramal Pharma Limited Mumbai 400070 (IN)	(72) Inventors: RAO, Venkataramana Rao 502 321, Telegana (IN) KOTTURI, Sharadsrikar 382 213, Ahmedabad (IN) BASITH, Abdul 502 321 Telegana (IN) BANDI, Ramesh Babu 502 321 Telegana (IN) MANDADI, Manoj Kumar 502 321 Telegana (IN) (74) Representative: Richards, Michèle E. et al Fry Heath & Spence LLP Unit A, Faraday Court Faraday Road Crawley, West Sussex RH10 9PU Crawley, West Sussex RH10 9PU (GB)